CA2181902A1 - Continuous casting facility and process for producing rectangular thin slabs - Google Patents
Continuous casting facility and process for producing rectangular thin slabsInfo
- Publication number
- CA2181902A1 CA2181902A1 CA002181902A CA2181902A CA2181902A1 CA 2181902 A1 CA2181902 A1 CA 2181902A1 CA 002181902 A CA002181902 A CA 002181902A CA 2181902 A CA2181902 A CA 2181902A CA 2181902 A1 CA2181902 A1 CA 2181902A1
- Authority
- CA
- Canada
- Prior art keywords
- strand
- casting
- mold
- continuous casting
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
- Artificial Fish Reefs (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Heat Treatment Of Articles (AREA)
- Pinball Game Machines (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention is directed to a process and to a continuous casting installation for the production of thin slabs, preferably of steel with a predetermined solidification thickness of, e.g., 50 mm, in which an optimum surface quality and internal quality of the strand with minimal and predetermined solidification thickness and plant capacity, and accordingly minimal rolling effort, is achieved by the introduction and optimal combination of such elements as the following: continuous casting and rolling in the region of the strand guide (segment 0), hydraulically driven lifting platform, casting powder and feed thereof, immersion nozzle with specific flow cross section. A qualitative adjustment of the above-mentioned parameters relating to the process and continuous casting installation results in a satisfactory supply of casting slag and bath movement in the cast surface compared with a standard slab with a thickness of 200 mm. These conditions from the crater end to the cast surface exert a direct influence on the superficial and internal quality of the strand and on the reliability of the casting process.
Description
.
~I L ~ ~ 1 8 1 9 02 . CONTINUOUS CASTING FACILITY AND PROCESS FOR PRODUCING
RECTANGULAR THIN SLABS
, ~, The invention is directed to a continuous casting installation and to a process for the production of thin slabs.
The use of flat immersion nozzles is known from the prior art, e.g., DE 37 09 188 Al .
Further, llyl~ , driven lifling platforms which allow the stroke, frequency and mode of the oscillation to be changed and selected in an optimum manner by deviating from the sinusoidal oscillation during the casting process itself are conventional. Continuous casting and rolling in which the thickness of the cast metal is reduced during ~ in such a way that the internal quality of the strand is improved is known from DE 38 18 077 Al, among other references.
Evaluation of the prior art reveals that the aim of producing thin strands requires the solution of complex problems and that the totality of i r~ nr~ variables with respec~ to the entire continuous casting installation is so great that the person of average skill in the art is far from k..L~ lb~ enough, and can also not be expected, to find from the multitude of more or less usable possible solutions one which will lead to Da~i~L~ y results in the most c~nnnmi~ manner.
The object of the present invention is to provide a process and a continuous casting installation wbich make it possible to achieve a given thickness of the thin strand by achieving optimum conditions in the slag supply and in the reduction in strand thickness in t~le mold and in the guide stand in continuous casting and rolling.
This object is met by tlle features of claims I and 3. The subclaims contain advantageous further ~ ,lop~ of the dependent claims which are not merely self-evident.
The solution to the problem is not dependent upon the type of mold, e.g., vertical mold, vertical mold with bend, or curved mold.
The invention is described hereinafter by way of example with reference to the drawings.
Fig. I shows the casting conditions iri the mold;
.. 2 . Fig. 2 shows the technical effort for uniform surface quality and casting output as a function of ~ the slab thickness with reference to a slab with a thickness of 200 mm and a width of 1,000 .~ mm;
~:i Figs. 3.1-3.3 show the technical effort for uniform surface quality and slab thickness as a function of the casting speed with reference to a slab with a thickness of 200 mnt and a width ,; of 1,000 mm;
,', Fig. 4 shows the hydraulic behavior of the steel in tlle mold as a function of the slab tllickness with reference to a slab with a thickness of 200 mm and a width of 1,000 mm;
Fig. 5 shows a continuous casting installation.
Results of tests carried out in researching the invention show that the surface quality of a strand ~ lhc~ depends upon the v of slag The meniscus, i.e., the interplay ;' between the slag height (h5lag) and the strand shell (h5trand shell) emerging from the bath during the upstroke of the mold, is responsible for this (Fig. 1).
,- It has been shown that the following criterion (I) hS~ag 2 hstrandshcD
must be met for optimum lubrication and to prevent surface defects (casting powder particles, ncdvll~ alllly in the form of oxides, located directly below the strand surface).
. The slag height hS~ag depends primarily on the tl~ickness of the mold inlet cross section and the strand shell height h5trand shcll depends primarily on the stroke of the oscillating mold.
When ~.u~ci 1~ v the value h51ag and its d ~ on the thickness of the mold inlet cross section, the following equation (2) ha~ldicap = produc~d strarid s~fa~e i~l D~2/mil1 X l/m2 ba~ ac~
` 2181902 ', 3 ; which can also be regarded as the technical effort which must be put into the system, ulyli6;l~1y shows the following results: When the ~u~ al 200-mm thick slab is compared with a 50-mm thick slab at a casting output of 2.736 t/min and is given the value of I in equation (2) for the 200-mm slab, this value increases to 16.62 for the 50-mm slab as is shown in Fig. 2. Tilis means that reiationsilip (2) is inversely yl~yoll~ dl to the decreasing slab thickness, where the dependency follows an exponential curve.
On the other hand, in ~ Ci~lf ~ of the change in relationship (2) with an increaSe in casting speed given a fixed casting thickness as is shown in Fig. 3 6r a 75-mm mold, a 100-mm mold and a 1 25-mm mold, it will be observed that this value only increases linearly with a slight slope of the straight line.
tir~ehir (I) is influenced considerably by the turbulence which occurs when the metal flows into the mold and which often extends to the bath surface and can lead to wave ~1 , IIIOYI ' The crests of the waves can rise above the slag surface resulting in interrupted lubrication. This turbulence is dependent in part on the throughput and on the thickness and ;, width of the mold at the immersion noi~zie outlet cross section. In order to measure the turbulence, the hydraulic behavior is defined as the quotient of throughput and thickness and can be expressed as follows:
~I L ~ ~ 1 8 1 9 02 . CONTINUOUS CASTING FACILITY AND PROCESS FOR PRODUCING
RECTANGULAR THIN SLABS
, ~, The invention is directed to a continuous casting installation and to a process for the production of thin slabs.
The use of flat immersion nozzles is known from the prior art, e.g., DE 37 09 188 Al .
Further, llyl~ , driven lifling platforms which allow the stroke, frequency and mode of the oscillation to be changed and selected in an optimum manner by deviating from the sinusoidal oscillation during the casting process itself are conventional. Continuous casting and rolling in which the thickness of the cast metal is reduced during ~ in such a way that the internal quality of the strand is improved is known from DE 38 18 077 Al, among other references.
Evaluation of the prior art reveals that the aim of producing thin strands requires the solution of complex problems and that the totality of i r~ nr~ variables with respec~ to the entire continuous casting installation is so great that the person of average skill in the art is far from k..L~ lb~ enough, and can also not be expected, to find from the multitude of more or less usable possible solutions one which will lead to Da~i~L~ y results in the most c~nnnmi~ manner.
The object of the present invention is to provide a process and a continuous casting installation wbich make it possible to achieve a given thickness of the thin strand by achieving optimum conditions in the slag supply and in the reduction in strand thickness in t~le mold and in the guide stand in continuous casting and rolling.
This object is met by tlle features of claims I and 3. The subclaims contain advantageous further ~ ,lop~ of the dependent claims which are not merely self-evident.
The solution to the problem is not dependent upon the type of mold, e.g., vertical mold, vertical mold with bend, or curved mold.
The invention is described hereinafter by way of example with reference to the drawings.
Fig. I shows the casting conditions iri the mold;
.. 2 . Fig. 2 shows the technical effort for uniform surface quality and casting output as a function of ~ the slab thickness with reference to a slab with a thickness of 200 mm and a width of 1,000 .~ mm;
~:i Figs. 3.1-3.3 show the technical effort for uniform surface quality and slab thickness as a function of the casting speed with reference to a slab with a thickness of 200 mnt and a width ,; of 1,000 mm;
,', Fig. 4 shows the hydraulic behavior of the steel in tlle mold as a function of the slab tllickness with reference to a slab with a thickness of 200 mm and a width of 1,000 mm;
Fig. 5 shows a continuous casting installation.
Results of tests carried out in researching the invention show that the surface quality of a strand ~ lhc~ depends upon the v of slag The meniscus, i.e., the interplay ;' between the slag height (h5lag) and the strand shell (h5trand shell) emerging from the bath during the upstroke of the mold, is responsible for this (Fig. 1).
,- It has been shown that the following criterion (I) hS~ag 2 hstrandshcD
must be met for optimum lubrication and to prevent surface defects (casting powder particles, ncdvll~ alllly in the form of oxides, located directly below the strand surface).
. The slag height hS~ag depends primarily on the tl~ickness of the mold inlet cross section and the strand shell height h5trand shcll depends primarily on the stroke of the oscillating mold.
When ~.u~ci 1~ v the value h51ag and its d ~ on the thickness of the mold inlet cross section, the following equation (2) ha~ldicap = produc~d strarid s~fa~e i~l D~2/mil1 X l/m2 ba~ ac~
` 2181902 ', 3 ; which can also be regarded as the technical effort which must be put into the system, ulyli6;l~1y shows the following results: When the ~u~ al 200-mm thick slab is compared with a 50-mm thick slab at a casting output of 2.736 t/min and is given the value of I in equation (2) for the 200-mm slab, this value increases to 16.62 for the 50-mm slab as is shown in Fig. 2. Tilis means that reiationsilip (2) is inversely yl~yoll~ dl to the decreasing slab thickness, where the dependency follows an exponential curve.
On the other hand, in ~ Ci~lf ~ of the change in relationship (2) with an increaSe in casting speed given a fixed casting thickness as is shown in Fig. 3 6r a 75-mm mold, a 100-mm mold and a 1 25-mm mold, it will be observed that this value only increases linearly with a slight slope of the straight line.
tir~ehir (I) is influenced considerably by the turbulence which occurs when the metal flows into the mold and which often extends to the bath surface and can lead to wave ~1 , IIIOYI ' The crests of the waves can rise above the slag surface resulting in interrupted lubrication. This turbulence is dependent in part on the throughput and on the thickness and ;, width of the mold at the immersion noi~zie outlet cross section. In order to measure the turbulence, the hydraulic behavior is defined as the quotient of throughput and thickness and can be expressed as follows:
3 hydraulic behal)ior= ~roh~pht ~n t~mm thicbl ~5s in mm Values for the hydraulic behavior with reference to the 200-mm thick slab are shown by way of example in Fig. 4. It will be seen that larger mold thicknesses result in an appreciable improvement in hydraulic behavior.
The following relationship is also significant with regard to turbulence:
The following relationship is also significant with regard to turbulence:
(4) P~ s 50, FrA
where FTA = cross-sectional surface of immersion nozzle outlet FST = strand cross section of completely solidified slab.
Further, an elf ~.l,ualat;..~,lic brake in the mold region can noticeably reduce the turbulence in the region of the cast surface.
.
2t8~9~2 . .
,t, 4 ; '~ It follows from the ~ given above, which were verified by l.lea~
',. that reducing the slab thickness in the mold, for example, from 100 mm to 50 mm, increases i the problems in _ relationship (I) to an c,.ll~lo~Jil~y extent. That is, leaving aside :~ the difficulties in the metal feed, it is virtually impossible to apply suff~cient casting powder to ;,i the small mold inlet cross section to lubricate the resulting enormous strand surface and, '., moreover, to adjust l~ liOII~ (4). On the other hand, tlle casting speed can be increased without special additional effort with a strand thickness of, e.g., 75 mm in the mold and &CCul ii--l;ly in the cast surface. Surprisingly, it has been found that it is not meaningful to maintain a constant slab thickness of the mold until the end of the s~ (crater end) in , the area of thin-slab casting, but rather tl~at it is ~,ui~sid~,.. li~l~ simpler in terms of technicai '.. ' effort to reduce and achieve the slab thickness as it is fed to the rolling mill by means of a continuous casting and rolling step. A cluster roll stand (segment 0), e.g., constructed as a , gripper segment, has proven advantageous for this purpose.
Fig. 5 shows a continuous casting installation, by way of example, which contains all of the inventive features.
-21819~
,: `
s Reference Numbers ' I Qcasting powdcr 18 optimized casting powder 2 powder Tlj, tJvwd~,~/slag phase 19 75 x 800 - 1,600 mm, boundary slab size in the 3 4trand shell~ cast surface (meniscus) :, height of strand shelUbath surface 20 IS x 220 mrn, 4 h5lag, flow cross section of slag height immersion nozzle ,. S powder, 21 hydraulic mold drive ;' powderheight 22 FsT/FTA ~50 ) 6 immersion nozzle 23 75 x 800 -1,600 mm, 7 deposit slab size at mold outlet 8 oxide flow into slag 24 hinge or hydraulic cylinder 9 Vg = casting speed or the like Qdag = slag . . " 25 segment 0, e.g., designed as gripper 11 air 26 hydraulic cylinder or the like .J 12 .,1~ ` " boundary, 27 50mm,slabthicknessaftercasting . solid/liquid steel and rolling process , 13 strand shell 28 segment I nwithhydraulic : 14 oscillation (stroke, frequency, adjustment or the like mode) 29 Vgr,lax 6 m/min copper plate 30 50 mm, slab thickness at end of ,, 16 spreader strand guide 17 immersion nozzle outer d;n~nC;nnc, e g, 2jO x 45mm inner dimpncionc~ e.g., 220 x 1 5mm ., i') FST = cross section of immersion nozzle outlet FTA = strand cross section of completely solidifled slab
where FTA = cross-sectional surface of immersion nozzle outlet FST = strand cross section of completely solidified slab.
Further, an elf ~.l,ualat;..~,lic brake in the mold region can noticeably reduce the turbulence in the region of the cast surface.
.
2t8~9~2 . .
,t, 4 ; '~ It follows from the ~ given above, which were verified by l.lea~
',. that reducing the slab thickness in the mold, for example, from 100 mm to 50 mm, increases i the problems in _ relationship (I) to an c,.ll~lo~Jil~y extent. That is, leaving aside :~ the difficulties in the metal feed, it is virtually impossible to apply suff~cient casting powder to ;,i the small mold inlet cross section to lubricate the resulting enormous strand surface and, '., moreover, to adjust l~ liOII~ (4). On the other hand, tlle casting speed can be increased without special additional effort with a strand thickness of, e.g., 75 mm in the mold and &CCul ii--l;ly in the cast surface. Surprisingly, it has been found that it is not meaningful to maintain a constant slab thickness of the mold until the end of the s~ (crater end) in , the area of thin-slab casting, but rather tl~at it is ~,ui~sid~,.. li~l~ simpler in terms of technicai '.. ' effort to reduce and achieve the slab thickness as it is fed to the rolling mill by means of a continuous casting and rolling step. A cluster roll stand (segment 0), e.g., constructed as a , gripper segment, has proven advantageous for this purpose.
Fig. 5 shows a continuous casting installation, by way of example, which contains all of the inventive features.
-21819~
,: `
s Reference Numbers ' I Qcasting powdcr 18 optimized casting powder 2 powder Tlj, tJvwd~,~/slag phase 19 75 x 800 - 1,600 mm, boundary slab size in the 3 4trand shell~ cast surface (meniscus) :, height of strand shelUbath surface 20 IS x 220 mrn, 4 h5lag, flow cross section of slag height immersion nozzle ,. S powder, 21 hydraulic mold drive ;' powderheight 22 FsT/FTA ~50 ) 6 immersion nozzle 23 75 x 800 -1,600 mm, 7 deposit slab size at mold outlet 8 oxide flow into slag 24 hinge or hydraulic cylinder 9 Vg = casting speed or the like Qdag = slag . . " 25 segment 0, e.g., designed as gripper 11 air 26 hydraulic cylinder or the like .J 12 .,1~ ` " boundary, 27 50mm,slabthicknessaftercasting . solid/liquid steel and rolling process , 13 strand shell 28 segment I nwithhydraulic : 14 oscillation (stroke, frequency, adjustment or the like mode) 29 Vgr,lax 6 m/min copper plate 30 50 mm, slab thickness at end of ,, 16 spreader strand guide 17 immersion nozzle outer d;n~nC;nnc, e g, 2jO x 45mm inner dimpncionc~ e.g., 220 x 1 5mm ., i') FST = cross section of immersion nozzle outlet FTA = strand cross section of completely solidifled slab
Claims (4)
1. Process for producing thin slabs comprising the following steps:
- casting of molten metal by means of an immersion nozzle in an oscillating rectangular mold while maintaining the conditions for the immersion nozzle and the mold:
50 , where FST = strand cross section of completely solidified slab FTA = cross section of immersion nozzle outlet, - supply of casting powder to the molten metal such that the relationship hslag hstrand shell' where hslag = height of strand shell/bath surface hstrand shell = slag height, is maintained depending on the oscillation stroke, shape and frequency of mold movement, - reduction of the strand cross section directly below the mold in a plurality of steps in a cluster roll stand in order to form a forced convection in the still liquid interior of the strand parallel to the continuous strand thickness reduction, wherein the strandachieves its final thickness while still having a liquid core at the end of the cluster roll stand, and - control of solidification such that a two-phase zone is present in the interior of the strand after achieving the final thickness at the output of the cluster roll stand.
- casting of molten metal by means of an immersion nozzle in an oscillating rectangular mold while maintaining the conditions for the immersion nozzle and the mold:
50 , where FST = strand cross section of completely solidified slab FTA = cross section of immersion nozzle outlet, - supply of casting powder to the molten metal such that the relationship hslag hstrand shell' where hslag = height of strand shell/bath surface hstrand shell = slag height, is maintained depending on the oscillation stroke, shape and frequency of mold movement, - reduction of the strand cross section directly below the mold in a plurality of steps in a cluster roll stand in order to form a forced convection in the still liquid interior of the strand parallel to the continuous strand thickness reduction, wherein the strandachieves its final thickness while still having a liquid core at the end of the cluster roll stand, and - control of solidification such that a two-phase zone is present in the interior of the strand after achieving the final thickness at the output of the cluster roll stand.
2. Process according to claim 1, characterized in that the frequency, stroke and oscillation mode for the mold movement can be selected optionally during the casting process itself.
3. Continuous casting installation for implementing the process according to one of the preceding claims containing the following elements:
- an immersion nozzle, whose cross section (FTA) is greater than or equal to 1/50 of the strand cross section of the completely solidified slab (FST), which projects into a rectangular mold communicating with an oscillating arrangement which can be optionally adjusted with respect to the frequency, stroke and mode of oscillation, - a casting powder feed which communicates with the oscillating arrangement via a measuring and regulating device and which supplies casting powder as a function of the stroke, mode and frequency of oscillation such that the slag height (hslag) is greater than or equal to the height of the strand shell/bath surface (hstrand shell), and - a cluster roll stand (25) which is arranged downstream of the rectangular mold as seen in the drawing out direction and which has a hydraulic arrangement (24, 25) by which the distance between two rolls located opposite one another can be changed in a continuous manner.
- an immersion nozzle, whose cross section (FTA) is greater than or equal to 1/50 of the strand cross section of the completely solidified slab (FST), which projects into a rectangular mold communicating with an oscillating arrangement which can be optionally adjusted with respect to the frequency, stroke and mode of oscillation, - a casting powder feed which communicates with the oscillating arrangement via a measuring and regulating device and which supplies casting powder as a function of the stroke, mode and frequency of oscillation such that the slag height (hslag) is greater than or equal to the height of the strand shell/bath surface (hstrand shell), and - a cluster roll stand (25) which is arranged downstream of the rectangular mold as seen in the drawing out direction and which has a hydraulic arrangement (24, 25) by which the distance between two rolls located opposite one another can be changed in a continuous manner.
4. Continuous casting installation according to claim 3, characterized in that the distance between two adjacent rolls is so selected that a stirring effect is achieved in the still liquid interior of the strand with predetermined strand thickness reduction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4403048.7 | 1994-01-28 | ||
| DE4403048A DE4403048C1 (en) | 1994-01-28 | 1994-01-28 | Continuous caster and process for producing rectangular thin slabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2181902A1 true CA2181902A1 (en) | 1995-08-03 |
Family
ID=6509214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002181902A Abandoned CA2181902A1 (en) | 1994-01-28 | 1995-01-20 | Continuous casting facility and process for producing rectangular thin slabs |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0741617B2 (en) |
| JP (1) | JP3056252B2 (en) |
| KR (1) | KR100355000B1 (en) |
| CN (1) | CN1046450C (en) |
| AT (1) | ATE164102T1 (en) |
| AU (1) | AU1453195A (en) |
| BR (1) | BR9506665A (en) |
| CA (1) | CA2181902A1 (en) |
| DE (2) | DE4403048C1 (en) |
| DK (1) | DK0741617T4 (en) |
| ES (1) | ES2113730T5 (en) |
| RU (1) | RU2121903C1 (en) |
| WO (1) | WO1995020444A1 (en) |
| ZA (1) | ZA95670B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19639297C2 (en) * | 1996-09-25 | 2000-02-03 | Schloemann Siemag Ag | Method and device for high-speed continuous casting plants with a reduction in strand thickness during solidification |
| DE19639302C2 (en) * | 1996-09-25 | 2000-02-24 | Schloemann Siemag Ag | Method and device for producing thin slabs on a continuous caster |
| AT408323B (en) * | 1999-12-01 | 2001-10-25 | Voest Alpine Ind Anlagen | METHOD FOR STEEL CONTINUOUS |
| DE10057160A1 (en) * | 2000-11-16 | 2002-05-29 | Sms Demag Ag | Method and device for producing thin slabs |
| ITMI20120046A1 (en) * | 2012-01-18 | 2013-07-19 | Arvedi Steel Engineering S P A | PLANT AND PROCEDURE FOR THE CONTINUOUS QUICK CASTING OF STEEL BRAMME AND STEEL BRAMME |
| CN109465415A (en) * | 2018-12-07 | 2019-03-15 | 东北大学 | Fan-shaped section roll array structure under a kind of double single-point weight in continuous casting and solidifying end |
| CN117564235B (en) * | 2024-01-15 | 2024-04-09 | 中铝材料应用研究院有限公司 | Casting and rolling device and method for aluminum alloy plate blank |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3423475C2 (en) † | 1984-06-26 | 1986-07-17 | Mannesmann AG, 4000 Düsseldorf | Method and device for the continuous casting of liquid metals, in particular of liquid steel |
| DE3627991A1 (en) * | 1986-08-18 | 1988-02-25 | Mannesmann Ag | METHOD FOR CONTINUOUSLY MOLDING SLABS AND DEVICE FOR CARRYING OUT THE METHOD |
| DE3709188A1 (en) * | 1987-03-20 | 1988-09-29 | Mannesmann Ag | POURING PIPE FOR METALLURGICAL VESSELS |
| DE3818077A1 (en) * | 1988-05-25 | 1989-11-30 | Mannesmann Ag | METHOD FOR CONTINUOUS CASTING ROLLERS |
| DE3823861A1 (en) * | 1988-07-14 | 1990-01-18 | Thyssen Stahl Ag | METHOD AND SYSTEM FOR PRODUCING A STEEL TAPE THICKNESS THAN 10 MM |
-
1994
- 1994-01-28 DE DE4403048A patent/DE4403048C1/en not_active Expired - Lifetime
-
1995
- 1995-01-20 AT AT95906265T patent/ATE164102T1/en active
- 1995-01-20 JP JP7519818A patent/JP3056252B2/en not_active Expired - Fee Related
- 1995-01-20 DE DE59501651T patent/DE59501651D1/en not_active Expired - Lifetime
- 1995-01-20 WO PCT/DE1995/000089 patent/WO1995020444A1/en active IP Right Grant
- 1995-01-20 EP EP95906265A patent/EP0741617B2/en not_active Expired - Lifetime
- 1995-01-20 RU RU96117380A patent/RU2121903C1/en not_active IP Right Cessation
- 1995-01-20 DK DK95906265T patent/DK0741617T4/en active
- 1995-01-20 CN CN95191384A patent/CN1046450C/en not_active Expired - Fee Related
- 1995-01-20 BR BR9506665A patent/BR9506665A/en not_active IP Right Cessation
- 1995-01-20 AU AU14531/95A patent/AU1453195A/en not_active Abandoned
- 1995-01-20 CA CA002181902A patent/CA2181902A1/en not_active Abandoned
- 1995-01-20 ES ES95906265T patent/ES2113730T5/en not_active Expired - Lifetime
- 1995-01-20 KR KR1019960704097A patent/KR100355000B1/en not_active IP Right Cessation
- 1995-01-27 ZA ZA95670A patent/ZA95670B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK0741617T4 (en) | 2002-06-17 |
| ES2113730T5 (en) | 2002-12-01 |
| ATE164102T1 (en) | 1998-04-15 |
| BR9506665A (en) | 1997-09-09 |
| WO1995020444A1 (en) | 1995-08-03 |
| EP0741617A1 (en) | 1996-11-13 |
| EP0741617B1 (en) | 1998-03-18 |
| CN1046450C (en) | 1999-11-17 |
| JPH09509615A (en) | 1997-09-30 |
| RU2121903C1 (en) | 1998-11-20 |
| DE4403048C1 (en) | 1995-07-13 |
| CN1139893A (en) | 1997-01-08 |
| JP3056252B2 (en) | 2000-06-26 |
| AU1453195A (en) | 1995-08-15 |
| DE59501651D1 (en) | 1998-04-23 |
| ES2113730T3 (en) | 1998-05-01 |
| ZA95670B (en) | 1995-09-28 |
| EP0741617B2 (en) | 2002-05-02 |
| KR100355000B1 (en) | 2002-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |